I'm in the process of selling off all my old Olympus and Sony gear. Hopefully in a few days I'll finally have the remaining money for the new camera. I've been looking at used gear because I can get better quality at a lower price. I'm pretty much only considering Nikon because I'm really impressed with the quality of their optics. I've narrowed it down to the following, I threw in one Canon cause its a steal of a price. Nikon D3000 - 10.2MP - REFB - $279 Nikon D5000 - 12.3MP - REFB - $329 Nikon D80 - 10.2MP - USED - $349 Canon 450D - 12.2MP - USED - $274 I'm not looking to go pro just yet, but I do want to build up a great collection of lenses for when I do go semi-pro eventually. Right now all I do is take pictures of friends and family for my personal portfolio. My top two are the D3000 and D5000. I've never owned a Nikon, or a Canon for that matter so I was hoping you guys could point me in the right direction. P.s. as far as low light AF goes...I notice Nikon has that in body flash night and canon uses flash pulses...what's best?